Air pump device adapted to small-sized inflatable product and inflatable product

ABSTRACT

An air pump device adapted to a small-sized inflatable product includes a support, a rotary fan rotatably disposed on the support and a ventilation rotary drum for connecting the inflatable product rotatably disposed on the support. One side of the ventilation rotary drum is provided with a ventilation interface capable of rotating with the ventilation rotary drum. An inflation port and a deflation port are formed in the support. A first centrifugal fan blade and a second centrifugal fan blade are coaxially distributed on the opposite two sides of the rotary fan respectively. The inflation port communicates with the exhaust end of the first centrifugal fan blade, the deflation port communicates with the suction end of the second centrifugal fan blade, and the ventilation interface can be driven to communicate with the inflation port and the deflation port respectively by the rotation of the ventilation rotary drum.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims priority from Chinese Patent Application No. 202210670492.X filed on Jun. 14, 2022, all of which are hereby incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to the technical field of air pumps, and particularly relates to an air pump device adapted to a small-sized inflatable product and an inflatable product using the same.

BACKGROUND

An air pump is a device that removes air from an enclosed space or pump air into an enclosed space. Two kinds of air pumps currently exist on the market, such as electric air pumps and manual air pumps. The electric air pumps are air pumps powered by electric power. Air is continuously compressed under electric power to generate air pressure. The electric air pumps are mainly used to inflate inflatable products. At present, the existing air pump is generally installed in the inflatable products to realize automatic inflation of the inflatable product. However, the inflating air pump may be fixed on large-sized inflatable products, which is provided with an air inlet. During inflating, the air inlet is opened, the inner cavity of the inflatable product thus can be filled with gas. After inflation is completed, the air inlet is closed to prevent the gas in the inflatable product from leaking out. When the inflatable product is required to be deflated, the deflation function of the air pump can be activated to automatically discharge the gas inside the inflatable product.

However, for small-sized inflatable products, it is difficult to directly install such air pump in the inflatable product due to its large volume. An inflation pipe and a deflation pipe are generally provided to achieve inflation and deflation, the inflation pipe and the deflation pipe respectively communicate with a fan, with operation of the two fans, the inflation and deflation of the inflation pipe and the deflation pipe are thus realized. Such configuration will cause too large volume of the air pump product, accordingly, too much installation space is required. The existing air pump thus is not suitable for installation in the small-sized inflatable product. According to another method, the inflation pipe and the deflation pipe are correspondingly mounted on the exhaust side and the air extracting side of a single fan to achieve inflation and deflation. Such method will cause large difference of the length and width of the air pump product, such as small height and large length, resulting in irregular shape of the air pump product. The volume of the air pump product cannot be reduced in such way, either, too much installation space is also required, and the air pump thus cannot be easily mounted in the inflatable product. In addition, in order to reduce the volume of the air pump so that the air pump can be mounted in the small-sized inflatable product, the deflation function of some air pumps are directly removed and only inflation function is retained. This method will undoubtedly affect the use experience of the product and cause inconvenience in use.

SUMMARY

The present invention thus provides an air pump device adapted to a small-sized inflatable product and an inflatable product using thereof. The air pump device according to the present invention has small volume, thus can be adapted to the small-sized inflatable product, and has the functions of inflation and deflation simultaneously.

The air pump device adapted to the small-sized inflatable product according to the present invention includes a support and a rotary fan rotatably disposed on the support. A rotation mechanism is rotatably disposed on the support, an airflow channel for connecting the inflatable product is formed inside the rotation mechanism, and the airflow channel is configured to be driven to respectively connect to the exhaust end and the suction end of the rotary fan by controlling the rotation mechanism to rotate to different angles.

According to the present invention, during operation, by controlling the rotation mechanism to rotate to different angles, the airflow channel is driven to be butted to the exhaust end and the suction end of the rotary fan respectively. That is, when the rotation mechanism is controlled to rotate to a certain angle, the airflow channel is driven to be butted to the exhaust end of the rotary fan, the airflow channel thus can output airflow to the inflatable product by this time, thereby achieving an inflation function. Similarly, when the rotation mechanism is controlled to rotate to another certain angle, the airflow channel is driven to be butted to the air inlet of the rotary fan, the airflow channel thus can draw out gas inside the inflatable product by this time, thereby achieving a deflation function. With such configuration, the air pump simultaneously has the functions of inflation and deflation, and can achieve inflation and deflation with only one rotary fan and one airflow pipeline, which simplifies the structure and forms regular shape, thereby considerably reducing the overall volume of the air pump. Accordingly, when the air pump is installed in the inflatable product, small installation space is required, the air pump in this case thus can be more adapted to the small-sized inflatable product.

According to one embodiment, the rotation mechanism includes a ventilation rotary drum which is rotatably disposed on the support. The side wall of the ventilation rotary drum is provided with a ventilation interface capable of rotating with the ventilation rotary drum. The airflow channel is formed in the ventilation rotary drum. One end of the airflow channel is connected to the inflatable product, the other end of the airflow channel is butted to the ventilation interface. The ventilation interface is driven to be butted to the exhaust end and the suction end of the rotary fan respectively by controlling the ventilation rotary drum to rotate to different angles.

According to one embodiment, an inflation port and a deflation port are respectively formed in the support, the inflation port communicates with the suction end of the rotary fan, and the deflation port communicates with the exhaust end of the rotary fan.

According to one embodiment, a first centrifugal fan blade and a second centrifugal fan blade are respectively formed on the rotary fan, which are coaxially distributed on two opposite sides of the rotary fan respectively. The inflation port communicates with the exhaust end of the first centrifugal fan blade, and the deflation port communicates with the suction end of the second centrifugal fan blade. The ventilation interface is driven to communicate with the inflation port and the deflation port respectively by controlling the rotation of the ventilation rotary drum.

According to one embodiment, an operating knob is movably disposed on the air pump device, and a starting switch is fixedly disposed on the support. The operating knob is coaxially connected to the ventilation rotary drum. A first shifting plate and a second shifting plate are disposed on the operating knob, which circumferentially surround the outer wall of the operating knob. When the first shifting plate or the second shifting plate rotates together with the operating knob and the ventilation rotary drum, the first shifting plate or the second shifting plate synchronously triggers the starting switch.

According to one embodiment, an annular wall plate is disposed on the support, and the inflation port and the deflation port are arranged around the annular wall plate.

According to one embodiment, the rotary fan further includes a central shaft, a central plate and a ring plate. The central plate is fixed to the inner ring of the ring plate and connected to the central shaft. The central plate and the ring plate are parallel to each other and spaced apart from each other by a distance to form a ventilation gap. The first centrifugal fan blade is fixedly distributed on one side of the ring plate, the second centrifugal fan blade is fixedly distributed on the other side of the central plate, and the central plate and the ring plate are fixedly connected by the butt-joint of the first centrifugal fan blade and the second centrifugal fan blade at the ventilation gap.

According to one embodiment, an accommodating portion for receiving electric wires is further formed in the housing surface of the air pump device.

According to one embodiment, a direct current motor for supplying power to the rotary fan is disposed on the support. The direct current motor is able to be powered by a battery-type direct current and is also able to be powered by a direct current obtained by alternating current conversion.

The present invention further provides an inflatable product, which includes an inflatable body and the above-mentioned air pump device provided in the inflatable body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing an overall structure of an air pump device according to one embodiment;

FIG. 2 is a schematic view showing an overall structure of the air pump device according to one embodiment;

FIG. 3 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 4 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 5 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 6 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 7 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 8 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 9 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 10 is a schematic cross-sectional view showing the working process of the air pump device according to one embodiment;

FIG. 11 is another schematic cross-sectional view showing the working process of the air pump device according to one embodiment;

FIG. 12 is another schematic cross-sectional view showing the working process of the air pump device according to one embodiment;

FIG. 13 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 14 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 15 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 16 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 17 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 18 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 19 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 20 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 21 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 22 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 23 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 24 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 25 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 26 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 27 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 28 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 29 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 30 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 31 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 32 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 33 is a schematic view showing a partial structure of the air pump device according to one embodiment;

FIG. 34 is a schematic view showing a partial structure of the air pump device according to one embodiment; and

DETAILED DESCRIPTION

The embodiments of the present invention will be described below in detail, and examples of the described embodiments are shown in the accompanying drawings.

As shown in FIGS. 1-12 , an air pump device adapted to a small-sized inflatable product is provided, which includes a support 1 and a rotary fan 2 rotatably installed on the support 1. A rotation mechanism is rotatably provided on the support 1. An airflow channel for connecting the inflatable product is formed inside the rotation mechanism. The airflow channel can be driven to be butted to the exhaust end and the suction end of the rotary fan 2 respectively by controlling the rotation mechanism to rotate to different angles.

According to the present embodiment, as the rotation mechanism is rotatably disposed on the support 1, and the airflow channel for connecting the inflatable product is formed inside the rotation mechanism, the airflow channel can rotate together with the rotation mechanism. During operation, by controlling the rotation mechanism to rotate to different angles, the airflow channel can be driven to be butted to the exhaust end and the suction end of the rotary fan 2 respectively. That is, when the rotation mechanism is controlled to rotate to a certain angle, and the airflow channel is driven to be butted to the exhaust end of the rotary fan 2, the airflow channel thus can output airflow to the inflatable product by this time, thereby achieving an inflation function. Similarly, when the rotation mechanism is controlled to rotate to another certain angle, the airflow channel is driven to be butted to the air inlet of the rotary fan 2, the airflow channel thus can draw out gas inside the inflatable product by this time, thereby achieving a deflation function.

With such configuration, the air pump simultaneously has the functions of inflation and deflation, and can achieve inflation and deflation with only one rotary fan and one airflow pipeline, which simplifies the structure and form regular shape, thereby considerably reducing the overall volume of the air pump. Accordingly, when the air pump is installed in the inflatable product, small installation space is required, the air pump in this case thus can be more adapted to the small-sized inflatable product.

Specifically, as shown in FIGS. 1-12 , the rotation mechanism includes a ventilation rotary drum 3 which is rotatably installed on the support 1. A side wall of the ventilation rotary drum 3 is provided with a ventilation interface 4 capable of rotating with the ventilation rotary drum 3. The airflow channel is formed in the ventilation rotary drum 3. One end of the airflow channel is connected to the inflatable product, and the other end of the airflow channel is connected to the ventilation interface 4. The ventilation interface 4 can be driven to connect to the exhaust end and the suction end of the rotary fan 2 respectively by controlling the ventilation rotary drum 3 to rotate to different angles.

An inflation port 5 and a deflation port 6 are provided in the support 1, the inflation port 5 communicates with the suction end of the rotary fan 2, and the deflation port 6 communicates with the exhaust end of the rotary fan 2. A first centrifugal fan blade 7 and a second centrifugal fan blade 8 are formed on the rotary fan 2, which are coaxially distributed on two sides of the rotary fan 2 respectively. In this case, the exhaust end of the rotary fan 2 refers to the side of the rotary fan 2 where the first centrifugal fan blade 7 located, and the suction end of the rotary fan 2 refers to side of the rotary fan 2 where the second centrifugal fan blades 8 located. The inflation port 5 communicates with the exhaust end of the first centrifugal fan blade 7, the deflation port 6 communicates with the suction end of the second centrifugal fan blade 8, and the ventilation interface 4 can be driven to communicate with the inflation port 5 and the deflation port 6 respectively by controlling the rotation of the ventilation rotary drum 3.

According to the present embodiment, the rotary fan 2 is rotatably installed on the support 1, and the ventilation rotary drum 3 for connecting the inflatable product is also rotatably installed on the support 1. The ventilation interface 4 is formed in one side of the ventilation rotary drum 3, and the ventilation interface 4 thus can rotate together with the ventilation rotary drum 3. The inflation port 5 and the deflation port 6 are respectively provided in the support 1, and the first centrifugal fan blade 7 and the second centrifugal fan blade 8 are coaxially distributed on two opposite sides of the rotary fan 2 respectively. The inflation port 5 is close to the side of the first centrifugal fan blade 7, so that the inflation port 5 communicates with the exhaust end of the first centrifugal fan blade 7. The deflation port 6 communicates with the rotation center of the second centrifugal fan blade 8, so that the deflation port 6 communicates with the suction end of the second centrifugal fan blade 8. The ventilation interface 4 can be driven to communicate with the inflation port 5 and the deflation port 6 respectively by rotation of the ventilation rotary drum 3. In the present embodiment, when the ventilation rotary drum 3 rotates clockwise by a certain angle, the ventilation interface 4 communicates with the inflation port 5, and when the ventilation rotary drum 3 rotates counterclockwise by another certain angle, the ventilation interface 4 communicates with the deflation port 6.

In this embodiment, the inflation port 5 and the deflation port 6 are respectively provided in the support 1, the first centrifugal fan blade 7 and the second centrifugal fan blade 8 are coaxially disposed on two opposite sides of the rotary fan 2 respectively, and the inflation port 5 communicates with the air outlet of the first centrifugal fan blade 7, and the deflation port 6 communicates with the air inlet of the second centrifugal fan blade 8. The rotatable ventilating rotary drum 3 is installed in the support 1, and the ventilation interface 4 capable of rotating with the ventilation rotary drum 3 is formed in one side of the ventilation rotary drum 3, so that the ventilation port 4 can be driven to communicate with the inflation port 5 and the deflation port 6 respectively by rotating the ventilation rotary drum 3. As shown in FIGS. 10-12 , with such configuration, when the ventilation rotary drum 3 is rotated clockwise until that the ventilation interface 4 communicates with the inflation port 5, airflow discharged from the exhaust end of the first centrifugal fan blade 7 can enter the ventilation interface 4 through the inflation port 5, so that the airflow can be output to the outside through a pipe orifice of the ventilation rotary drum 3, the ventilation rotary drum 3 thus performs inflation on the inflatable product. On the contrary, when the ventilation rotary drum 3 is rotated counterclockwise until that the ventilation interface 4 to communicate with the deflation port 6, the suction end of the second centrifugal fan blade 8 communicates with the ventilation interface 4 via the deflation port 6, so that a negative pressure is formed inside the ventilation rotary drum 3 as air is continuously sucked by the suction end of the second centrifugal fan blade 8, and by this time, the pipe orifice of the ventilation rotary drum 3 can continuously absorb the external air, the ventilation rotary drum 3 thus can perform deflation on the inflatable product.

With the above-mentioned configuration, the air pump can have the functions of inflation and deflation simultaneously, and can achieve inflation and deflation with one rotary fan and one pipeline, which causes simplified structure and regular shape, thereby significantly reducing the overall volume of the air pump. Accordingly, when the air pump is installed in the inflatable product, small installation space is required, and the air pump thus can be more adapted to the small-sized inflatable product.

According to a preferable embodiment, as shown in FIG. 3 and FIG. 4 , a direct current motor 32 is installed on the support 1, which is in transmission connection with the rotary fan 2 and provides power to the rotary fan 2. When the motor 32 is actuated, the rotary fan 2 can be driven to rotate. The direct current motor 32 can be powered by a battery-type direct current, and can also be powered by a direct current obtained by alternating current conversion, so that the air pump device has wider application scenes.

As shown in FIG. 1 , the air pump further includes a housing 21, the support 1 is fixedly installed in the housing 21, the housing 21 is defined by a bottom shell 33 and a panel 34. A plurality of air holes 39 are provided in the panel 34. The rotary fan 2 can suck in or discharge air through the air holes 39.

According to a preferable embodiment, as shown in FIG. 7 , an annular plate 9 is provided on the support 1, the inflation port 5 and the deflation port 6 are respectively provided in the annular plate 9. Specifically, the inflation port 5 and the deflation port 6 are provided around the annular plate 9, a closing surface 10 is formed on the annular wall plate 9 which is located at a position between the inflation port 5 and the deflation port 6. In combination with FIG. 6 , an arc surface 11 is formed on the end surface of the ventilation interface 4, and the closing surface 10 can close the ventilation interface 4 by being attached to the arc surface 11. With such configuration, when the ventilation rotary drum 3 is not rotated and the ventilation interface 4 is butted to the closing surface 10 at the middle of the annular plate 9, the ventilation interface 4 can be closed by the closing surface 10, by this time, the ventilation rotary drum 3 is isolated from the rotary fan 2, and the air pump thus is in a stop state.

Referring back to FIG. 2 and FIG. 3 and in combination with FIG. 13 and FIG. 14 , an operating knob 13 is movably installed on the air pump device, a starting switch 12 is fixedly installed on the support 1, and the operating knob 13 is coaxially connected to the ventilation rotary drum 3. A first shifting plate 14 and a second shifting plate 15 are disposed on the operating knob 13, which are circumferentially surrounded the outer wall of the operating knob 13. When the first shifting plate 14 or the second shifting plate 15 rotates together with the operating knob 13 and the ventilation rotary drum 3, the first shifting plate 14 or the second shifting plate 15 synchronously triggers the starting switch 12.

Specifically, the starting switch 12 for actuating the operation of the motor 32 is fixedly installed on the support 1, and the operating knob 13 is rotatably installed on the panel 34 which is coaxially connected to the ventilation rotary drum 3. According to the present embodiment, the top of the ventilation rotary drum 3 is closed so that the operating knob 13 can be connected to the top of the ventilation rotary drum 3, thus when the operating knob 13 is manually controlled to rotate, the ventilation rotary drum 3 can be synchronously driven to rotate. The first shifting plate 14 and the second shifting plate 15 are respectively formed on the outer walls of two opposite sides of the operating knob 13. When the ventilation interface 4 on the ventilation rotary drum 3 is driven to communicate with the inflation port 5 by rotating the above-mentioned operating knob 13, the operating knob 13 synchronously drives the first shifting plate 14 to touch the starting switch 12 to trigger the starting switch 12 to rotate the motor 32 and the rotary fan 2. In a similar way, when the ventilation interface 4 on the ventilation rotary drum 3 is driven to communicate with the deflation port 6 by rotating the above-mentioned operating knob 13, the operating knob 13 also synchronously drives the second shifting plate 15 to touch the starting switch 12 to trigger the starting switch 12 to rotate the motor 32 and the rotary fan 2. With such configuration, during operation of the air pump, whether the ventilation rotary drum 3 is rotated clockwise or counterclockwise, the operating knob 13 can actuate the rotary fan 2 by the first shifting plate 14 and the second shifting plate 15 on two opposite sides, achieving easy and convenient operation.

Referring back to FIG. 1 , the panel 34 is provided with a plurality of gear identifications which includes a stop gear 35, an inflation gear 36 and a deflation gear 37. The stop gear 35, the inflation gear 36 and the deflation gear 37 are surrounded the periphery of the operating knob 13. When the operating knob 13 is rotated, a handle on the operating knob 13 can correspond to one of the above-mentioned gears. Such configuration makes a user easily know the working state of the air pump and thus achieves convenient operation.

As shown in FIGS. 15-20 , the housing 21 is provided with a through hole 22 butted to the pipe orifice of the ventilation rotary drum 3. In this case, the through hole 22 is formed at the bottom of the bottom shell 33 of the housing 21. A valve plate 16 covering the through hole 22 is movably disposed at the pipe orifice of the ventilation rotary drum 3. A movable plate 17 is fixed to the back side of the valve plate 16, and the movable plate 17 extends into the ventilation rotary drum 3. Optionally, the movable plate 17 penetrates into the ventilation rotary drum 3 from the through hole 22. A shoulder plate 18 is formed outwardly extending from the two opposite sides of the movable plate 17.

In combination with FIGS. 21-24 , two opposite sides of the inner wall of the ventilation rotary drum 3 are each provided with a V-shaped groove 19 which is close to the pipe orifice of the ventilation rotary drum 3. Both ends of the V-shaped groove 19 abut against the pipe orifice of the ventilation rotary drum 3, and the groove bottom of the V-shaped groove 19 is away from the pipe orifice of the ventilation rotary drum 3. The movable plate 17 is sleeved with a spring 20. Specifically, on the bottom shell 33 of the housing 21, a spring seat 23 is fixedly disposed at the center of the through hole 22. A clamping block 24 is formed at the tail end of the movable plate 17. One end of the spring 20 is elastically connected with the clamping block 24 in a sleeving mode, and the other end of the spring 20 is elastically abutted to the spring seat 23, so that the spring 20 can elastically eject and push the movable plate 17 via the clamping block 24, and then the valve plate 16 can be elastically ejected and pushed.

It can be seen that under the elastic force of the spring 20, the spring 20 can eject and push the movable plate 17 elastically to drive the shoulder plate 18 to fall into the groove bottom of the V-shaped groove 19, and by this time, the valve plate 16 can be driven to close up to the pipe orifice of the ventilation rotary drum 3, so as to close the through hole 22 by the valve plate 16, thus preventing the airflow in the ventilation rotary drum 3 from circulating. In a similar way, when the V-shaped groove 19 rotates with the ventilation rotary drum 3 (clockwise or counterclockwise), under the guide action of the V-shaped groove 19, the V-shaped groove 19 can drive and guide the shoulder plate 18 to move from the groove bottom of the V-shaped groove 19 to the end of the V-shaped groove 19, and then the valve plate 16 can be driven to be away from the pipe orifice of the ventilation rotary drum 3, so as to open the through hole 22 by the valve plate 16 and allow the airflow in the ventilation rotary drum 3 to circulate.

With such configuration, during operation of the air pump, the valve plate 16 can be moved back and forth in the axial direction under the elastic force of the spring 20 and the guiding action of the V-shaped groove 19, accordingly, the air pump valve can be opened and closed, thereby achieving simple structure and easy operation.

Referring to FIGS. 20-22 , according to one preferable embodiment, both ends of each V-shaped groove 19 are each provided with a groove 38. The shoulder plate 18 can fall into the groove 38 when the shoulder plate 18 is moved from the groove bottom of the V-shaped groove 19 to the end of the V-shaped groove 19, achieving positioning of the shoulder plate 18.

According to one preferable embodiment, as shown in FIGS. 17-20 , a sealing ring 25 is fixed to the inner side of the valve plate 16. The sealing ring 25 is abutted between the valve plate 16 and the through hole 22. It is thus possible to ensure the sealing of the through hole 22 by means of the sealing ring 25, which prevents gas in the inflatable product from leaking out through the air pump, i.e. air leakage can be prevented.

According to one preferable embodiment, as shown in FIG. 23 , FIG. 24 and FIG. 26 , an assembling ring 26 is surrounded on the periphery of the inner side of the through hole 22. A plurality of outwardly protruding positioning arcs 27 are formed on the assembling ring 26. An elastic arm 28 is respectively integrally formed on two opposite sides of the outer wall of the ventilation rotary drum 3. The elastic arm 28 extends outwards obliquely. When the ventilation rotary drum 3 is assembled on the support 1, the tail ends of the elastic arms 28 on the two sides of the ventilation rotary drum 3 are elastically connected in the assembling ring 26 in a sleeved mode so as to ensure the stability of the ventilation rotary drum 3 during rotation. In addition, the tail ends of the elastic arms 28 on both sides respectively fall into each positioning arc 27 in sequence with the rotation of the ventilation rotary drum 3, so that the positioning arc 27 can be used to temporarily limit the movement of the elastic arm 28, and the elastic arms 28 is thus locked, achieving positioning of the ventilation rotary drum 3 during the rotation.

With such configuration mentioned, during the use of the air pump, when the air pump is at an inflation state or a deflation state, the ventilation rotary drum 3 can maintain a corresponding rotation angle by means of limitation of each positioning arc 27 on the elastic arm 28, ensuring that the air pump can be maintained in the inflation state or the deflation state. In addition, when the air pump is in a stop state, the ventilation interface 4 on the ventilation rotary drum 3 can be maintained corresponding to the closing surface 10 by means of limitation of the positioning arc 27 on the elastic arm 28, so that the ventilation rotary drum 3 maintains in a closed state, in turn the air pump is also maintained in a stopped state.

According to one preferable embodiment, as shown in FIGS. 23-25 , a ball 29 that cooperates with the positioning arc 27 is formed at the tail end of each elastic arm 28. On one hand, by means of the contact of the cambered surface of the ball 29 with the assembling ring 26, the ventilation rotary drum 3 can be rotated smoothly, on the other hand, due to the cooperation of the positioning arc 27 with the ball 29, the ventilation rotary drum 3 is locked better.

According to one preferable embodiment, referring back to FIG. 1 and FIG. 2 , an accommodating portion 30 for receiving the electric wire is formed in the housing 21. In this case, the accommodating portion 30 is formed on the panel 34, and a cover plate 31 is movably disposed at an opening of the accommodating portion 30. Therefore, the electric wire of the air pump can be conveniently accommodated by the accommodating portion 30, and the accommodating portion 30 can be controlled to be open and close by the cover plate 31, which is simpler and easier in use.

According to one preferable embodiment, as shown in FIGS. 32-34 , the rotary fan 2 further includes a central shaft 40, a central plate 41 and a ring plate 42. The central plate 41 is fixed to the inner ring of the ring plate 42 and connected to the central shaft 40, and the central plate 41 and the ring plate 42 are parallel to each other and spaced apart from each other by a distance to form a ventilation gap 43. The first centrifugal fan blade 7 is fixedly distributed on one side of the ring plate 42, and the second centrifugal fan blade 8 is fixedly distributed on the other side of the central plate 41. The central plate 41 and the ring plate 42 are fixedly connected by the butt-joint of the first centrifugal fan blade 7 and the second centrifugal fan blade 8 at the ventilation gap 43. With such configuration, when the rotary fan 2 rotates in one direction, the airflow discharged by the second centrifugal fan blade 8 during the rotation can enter the first centrifugal fan blade 7 through the ventilation gap 43, so that the airflow can be smoothly discharged to the outside all around, the center of the second centrifugal fan blade 8 normally thus forms a negative pressure to achieve external suction. Therefore, it is finally possible to achieve that when the rotary fan 2 rotates in a single direction, air is discharged outwards from the front side thereof and air is sucked to the outside from the back side thereof.

The working principle of the present embodiment is as follows.

When the air pump is in the stop state, the handle on the operating knob 13 corresponds to the stop gear 35 on the panel 34, the ventilation interface 4 on one side of the ventilation rotary drum 3 corresponds to the closing surface 10, accordingly the arc surface 11 and the closing surface 10 are attached to each other, so that the closing surface 10 closes the ventilation interface 4, and by this time, the shoulder plate 18 is located at the groove bottom of the V-shaped groove 19, so that the sealing ring 25 on the back side of the valve plate 16 is attached to the through hole 22 in the bottom shell 33, the ventilation rotary drum 3 thus is in the closed state.

When the inflatable product needs to be inflated, the air pump is switched to the inflation state, as shown in FIG. 11 , FIG. 26 , FIG. 27 , FIG. 28 and FIG. 29 . The operating knob 13 is manually controlled to rotate clockwise, so that the handle on the operating knob 13 corresponds to the inflation gear 36 on the panel 34, in turn, the ventilation rotary drum 3 also rotates clockwise, so that the ventilation interface 4 communicates with the inflation port 5. Synchronously, the V-shaped groove 19 in the ventilation rotary drum 3 drives and guides the shoulder plate 18 to move to the groove 38 at one end of the V-shaped groove 19, so that the movable plate 17 is urged to drive the valve plate 16 to move axially, the valve plate 16 is enabled to be away from the pipe orifice of the ventilation rotary drum 3, so that the valve plate 16 is opened from the through hole 22 and the ventilation rotary drum 3 is switched to the conducting state. At the same time, the first shifting plate 14 on the side wall of the operation knob 13 also triggers the starting switch 12, so that the motor 32 drives the rotary fan 2 to rotate, and the airflow generated from one side of the first centrifugal fan blade 7 can successively pass through the inflation port 5, the ventilation interface 4 and the ventilation rotation drum 3, and is finally output from the through hole 22 to the inside of the inflatable product, thus realizing the inflation function.

When the inflatable product needs to be deflated, the air pump is required be switched to the deflation state, as shown in FIG. 12 , FIG. 30 and FIG. 31 . The operating knob 13 is manually controlled to rotate counterclockwise, so that the handle on the operating knob 13 corresponds to the deflation gear 37 on the panel 34, and by this time, the ventilation rotary drum 3 also rotates counterclockwise, so that the ventilation interface 4 communicates with the deflation port 6. Synchronously, the V-shaped groove 19 in the ventilation rotary drum 3 drives and guides the shoulder plate 18 to move to the groove 38 at the other end of the V-shaped groove 19 so that the movable plate 17 is urged to drive the valve plate 16 to move axially, the valve plate 16 is enabled to be away from the pipe orifice of the ventilation rotary drum 3, so that the valve plate 16 is opened from the through hole 22 and the ventilation rotary drum 3 is in the conducting state. At the same time, the second shifting plate 15 on the side wall of the operation knob 13 also triggers the starting switch 12, so that the motor 32 drives the rotary fan 2 to rotate, a negative pressure is formed inside the ventilation rotary drum 3 as air is continuously sucked by the suction end of the second centrifugal fan blade 8, and by this time, the pipe orifice of the ventilation rotary drum 3 can continuously absorb the external air, and the air in the inflatable product can enter the ventilation rotary drum 3 through the through hole 22, so that the ventilation rotary drum 3 can deflate the inflatable product to achieve the deflation function.

It should be noted that the above-mentioned embodiments are merely used for illustrating the technical solutions of the present invention and are not restrictive, and simple modifications or equivalent replacements for various technical features of the present embodiments fall within the protection scope of the present invention. 

1. An air pump device, comprising a support; a rotary fan rotatably disposed on the support; and a rotation mechanism rotatably provided on the support, an airflow channel for connecting the inflatable product being formed inside the rotation mechanism, wherein the airflow channel is configured to connect to an exhaust end and a suction end of the rotary fan respectively by controlling the rotation mechanism to rotate different angles.
 2. The air pump device according to claim 1, wherein the rotation mechanism comprises a ventilation rotary drum which is rotatably disposed on the support, the airflow channel is formed in the ventilation rotary drum, and a side wall of the ventilation rotary drum is provided with a ventilation interface capable of rotating with the ventilation rotary drum, and wherein one end of the airflow channel is connected to an inflatable product, the other end of the airflow channel is butted to the ventilation interface, and the ventilation interface is configured to connect to the exhaust end and the suction end of the rotary fan respectively by controlling the ventilation rotary drum to rotate different angles.
 3. The air pump device according to claim 2, wherein an inflation port and a deflation port are formed in the support, the inflation port communicates with the suction end of the rotary fan, and the deflation port communicates with the exhaust end of the rotary fan.
 4. The air pump device according to claim 3, wherein a first centrifugal fan blade and a second centrifugal fan blade are formed on the rotary fan, the first centrifugal fan blade and the second centrifugal fan blade are coaxially distributed on two opposite sides of the rotary fan respectively, the inflation port communicates with the exhaust end of the first centrifugal fan blade, the deflation port communicates with the suction end of the second centrifugal fan blade, and the ventilation interface is configured to communicate with the inflation port and the deflation port respectively by controlling the rotation of the ventilation rotary drum.
 5. The air pump device according to claim 2, wherein the air pump device is movably provided with an operating knob which is coaxially connected to the ventilation rotary drum, a starting switch is fixedly disposed on the support, and a first shifting plate and a second shifting plate are circumferentially surrounded an outer wall of the operating knob, and wherein when the first shifting plate or the second shifting plate rotates together with the operating knob and the ventilation rotary drum, the first shifting plate or the second shifting plate synchronously triggers the starting switch.
 6. The air pump device according to claim 5, wherein a plurality of gear identifications are provided including a stop gear, an inflation gear and a deflation gear which are surrounded a periphery of the operating knob.
 7. The air pump device according to claim 3, wherein an annular plate is provided on the support, and the inflation port and the deflation port are surrounded on the annular plate.
 8. The air pump device according to claim 4, wherein the rotary fan further comprises a central shaft, a central plate and a ring plate, the central plate is fixed to an inner ring of the ring plate and connected to the central shaft, the central plate and the ring plate is parallel to each other and spaced apart from each other by a distance to form a ventilation gap, and wherein the first centrifugal fan blade is fixedly distributed on one side of the ring plate, the second centrifugal fan blade being fixedly distributed on the other side of the central plate, and the central plate and the ring plate is fixedly connected by joint of the first centrifugal fan blade and the second centrifugal fan blade at the ventilation gap.
 9. The air pump device according to claim 1, wherein an accommodating portion for receiving an electric wire is formed in a housing of the air pump device.
 10. The air pump device according to claim 9, wherein the housing is defined by a bottom shell and a panel, and a plurality of air holes are provided in the panel.
 11. The air pump device according to claim 10, wherein a bottom of the bottom shell of the housing is provided a through hole, a valve plate covering the through hole is movably disposed at a pipe orifice of the rotation mechanism, the valve plate is provided with a movable plate extending into the rotation mechanism, and two opposite sides of the movable plate is respectively provided with a shoulder plate which is extending outwardly perpendicular to the movable plate.
 12. The air pump device according to claim 11, wherein two opposite sides of the inner wall of rotation mechanism are each provided with a V-shaped groove, the movable plate is sleeved with a spring, on the bottom shell of the housing, a spring seat is fixedly disposed at a center of the through hole, a clamping block is formed at a tail end of the movable plate, one end of the spring is elastically sleeved with the clamping block, and the other end of the spring is elastically abutted to the spring seat.
 13. The air pump device according to claim 12, wherein both ends of each V-shaped groove are each provided with a groove, the groove is configured to receive the shoulder plate when the shoulder plate is moved from a groove bottom of the V-shaped groove to the ends of the V-shaped groove.
 14. The air pump device according to claim 11, wherein a sealing ring facing to the through hole is fixed to the valve plate.
 15. The air pump device according to claim 11, wherein an assembling ring is surrounded on the periphery the through hole, a plurality of outwardly protruding positioning arcs are formed on the assembling ring, and two elastic arms are oppositely formed on the outer wall of rotation mechanism, the elastic arm extends outwards obliquely, wherein a tail end of each elastic arm are elastically connected to the assembling ring, and the tail end of each elastic arm is engaged with each positioning arc during rotation of rotation mechanism.
 16. The air pump device according to claim 15, wherein the tail end of each elastic arm is formed as a ball element, which is engaged with each positioning arc during rotation of rotation mechanism.
 17. The air pump device according to claim 1, wherein a direct current motor for supplying power to the rotary fan is disposed on the support, and the direct current motor is powered by a battery-type direct current and a direct current obtained by alternating current conversion.
 18. An inflatable product, comprising an inflatable body, wherein the inflatable body is provided with the air pump device according to claim
 1. 